The Forest House K4, commonly referred to as the Log House (ログハウス, Rogu Hausu?), is a player-owned house in the forests of the 22nd Floor of Aincrad that was later purchased by Asuna and Kirito. Unlike most player homes, it has a special quest, the «Witch of the West and the Three Treasures», attached to it, requiring players to complete the quest before the house can be purchased.